How to Print Alphabet sequentially in PHP? - php

Question

I have an array variable $arr = array('A','B','C','D');
$number = 5; (This is dynamic)
My new array value should be
$arr = array('A','B','C','D','E','F','G','H','I');
If
$number = 3;
Output should be:
$arr = array('A','B','C','D','E','F','G');
If $number variable will come more than 22 then print array from A to Z and with AA, AB, AC.. etc.
How to do that in PHP code?

Answer 1

How about this one: https://3v4l.org/IGhoL
<?php
/**
* Increments letter
* #param int $number
* #param array &$arr
*/
function increment($number, &$arr) {
$char = end($arr);
$char++;
for ($i = 0; $i < $number; $i++, $char++) {
$arr[] = $char;
}
}
$arr = range('A', 'D');
$number = 30;
increment($number, $arr);
var_dump($arr);

Answer 2

You can increment letters by incrementing it, then store it that array itself. This will print two letter sequence also ie., AA, AB ...
$arr = array('A','B','C','D');
$item = end($arr) ;
$i = 0 ;
while( $i++ < $number ) {
$arr[] = ++$item ;
}
print_r($arr) ;

Answer 3

Here is example to add chars from alphabet to array with offset. This works for one char. If you wish to work for more chars use loop in loop.
for ($c = ord('A') + $offset ;$c <= ord('Z');$c++) {
Array[] += chr($c);
}

Answer 4

$output = array();
$arr = array(A,B,C,D,E);
$data = range('F','Z');
$num = 4;
if($num < 22){
$output = array_merge($arr,array_slice($data, 0, $num));
}else{
// Write ur format here..
// $output = array('AA','AB',......,'AZ');
}
echo '<pre>';
print_r($output);